the field of medicine that specializes in the study of tumors. oncology. The branch of medicine that deals with the study and treatment of tumors.
Who are they? Millennials are currently aged 20-35, or born between 1980 and the end of 1994 (with some more generous definitions taking in those born up to 2000). They also get called Generation Y, because they follow on from Generation X (born 1965-1979), and other, less flattering names.
Millennials, also called Gen Y, are born between 1980 and 2000. Today, the oldest is 35 and the youngest is 15. At the height of their influence, there were 76 million boomers. In 2030, there will be 78 million millennials.